Safety device for wire-drawing apparatus.



G. OfROSE & T. KURTZ.

SAFETY DEVICE FOR WIRE DRAWING APPARATUS. I APPLICATION FILED JAN=..3-0. ISIS. 1,296,221. Patented Mar. 4,1919

at I m m n O A .n W o Q 323 w W. V w 4 v z Farms ca FNBTO-LITNQ. wumuam n c UNITED STATES PATENT OFFICE.

GEORGE O. ROSE AND THOMAS KURTZ, 0F MONESSE-N, PENNSYLVANIA, ASSIGNORS TO PITTSBURGH STEEL GOMPAN Y, OF PITT OF PENNSYLVANIA SBUBGH, PENNSYLVANIA, A CORPORATION Specification of Letters Patent. l

Patented Mar. 4, 1919.

Application filed January 30, 1918. Serial No. 214,510.

To all whom it'mag concern:

Be it known that we, GEORGE O. ROSE and THOMAS Kunrz, citizens of the United States and residents of Monessen, in the county of Westmoreland and State ofPennsylvania, have invented new and useful Improvements in Safety Devices for Vire- Drawing Apparatus; and we do hereby declare the followingto be a full, clear; and exact description thereof. I a Q Our invention relates to a safety: device for wire-drawing apparatus.

In the drawing of wire, he wire is unwound from a freely-rotating reel and is drawn'through the drawing-die by a powerdriven drum. The operator has tostand adjacent to the drum and die for feeding the die'with lubricant and for stepping the rotation of the drum when necessary; and during the drawing of the wire, it sometimes happens that the 'operatorcomes in contact with the wire, and in many instances has become entangled in loops and kinks of the wire between the die and the reel and suffered injury and even lostfhis life by being drawn with the wire into contact with the machine. A loop. or kink in the wire "will also very often cause the wire to break ifj-the loop or kink is drawn against the die, this breaking of the wire resulting in con- 'siderable loss by reason of time required for rep-lacing a new b11nd1e,as the broken bundle must be taken off of the winding drum and a simple and eflicient form of new one started.

V The object of our invention is-to provide a safety device which will act automatically to shut off the windin'g'of the wire on the drum and so avoid the serious accidents and delay which have heretofore happened in this, class of apparatus.

To these ends our venti-on com'prisesthe novel features hereinafter set forth and claimed.

In the accompa'n ying drawing, Figure- 1. is 'a-planyiew of wire-drawing apparatus 7 with our safety device'applied thereto; Fig.

2 is an end view Fig. 31s a view taken at rightan'gles to: Fig. 2-; Fig. 4 is a vertical. section of the 'winding drum and means. by hich it; is connected'to the vertical shaft;

and Figs. .5 and 6 are details." p In the drawing, th numeral 2 designates a suitable draw-bench or; frame in which the shaft 3 is journaled, which is connected up to any suitable source of power. Mounted on the shaft 3 is the. bevel-gear 4, which meshes with the bevel-gear 5 onthe vertical shaft 6, which is arranged in suitable bearings in the draw-ben'ch2. Loosely mounted on the upper end of the vertical shaft 6 is the winding-drum 7 of ordinary construction, said winding-drum having the detents 8 depending therefrom, said detents being adaptedto engage the ratchet member or plate 9 rigidly secured to the vertical. shaft 6; It will beapparentl that when the detents 8 are in engagement with the ratchet-plate 9, as indicated in Fig. 4, thata rotary motion will be impartedto the drum 7. 1

A guardlever"10 is pivoted at ll to'a plate 34, whichis secured to the angle bar 12' of the fram e'2, the lower end of said Is- ;ver being connected by a clevis 13 andthe the l0op'16 through which the wire17 passes die 18 mountedon the draw-bench 2.

The plate 34 supports a latch 20 which carries'the weighted arm 21, being connected tion 23. Theouter end of-the arm 21 has front of the draw-bench is provided for reon its way from'the reel '(not shown) to the thereto at 22, and having the link-connecturning the parts to normal position as will hereinafter be described. H y 7 V The latch 20 ismade upof two parts 29 and 30, and is assembled on the plate 34 1 with the plate between these parts. The parts are connected bythe bolts 31, the lower bolt" forming the point of connection of the'arm 21 to said latch, and the upper A link '35 is p vo'tally connected to the angle-iron12; and to the link 23, and forms I .the lful'crumnpon which the weighted arm when said rm is released." 1

fTopr eve: t disengagement ofthe latch20 fromits seatthrough vibration; links 365 37 :boltforms a journal for the roller 3 2, which is between the latch parts and isadapted connectingthe guard-lever 10f and the plate V '34" are provided." These links when the parts I V or ven f a faceideat o' th are in normal position confine the latch against movement, link 37 engaging the laterally-extending portion of the latch, and

is moved only when the operating guard lever 10 is moved. Links 36, 37 are also for the purpose of pushing the roller 32 of latch 20 into the slot or offset '33-'of the plate 34:, when said latch 20 is raised again to normal position.

The upper end of the latch 20 has a lateral extension Or head 20" which extends ver the outer end of t e. le e arm 9-, which proieets hrough e Opening 3 of th Pla e 4-- This arm s o necte o the yoke 40, which, is pivotally mounted, as at 4 1, to the frame of the, draw-bench 2. The yoke :0 ca ries the shoes 42, which are adapted to; engage the lower face of the dr m 7' wh n h y ke is ocked. on its P ot to,- raise he d m out of g men with its, driving element, In normal posi- .tion ofithe lever-aim 39, as indicated by the 1,111 1i es,.F-ig. 3;,;the drum 7, is. in its lowered position with he de en sengaging the atchet-plat .9, and t edmin 7 is r a d: by

he shaf In e operation oi he de ice umder normal oondltlQhS, the ire17 coming, from; the

supply-reel passes through the loop, 16- of th gu rd-arm through the die. 18;,- and a und th drum he Tistq by t e on ction here ofo e. described, and l ng ae e re is ed even-1y to the die, the r e i g-of the wire on the drum 7 takes Pla e W thou ih'didentl If, howe er, the Wire by reason Ofa kink or loop, or for other ause, "sh uld n. any Way h- ,or gather around t e ope a o s a to be dra n. or ILQM C by hewire ag inst the guard-arm 14; said gl ardea -in would be moved into. the position indicated b dotted lines, Fig. 1, and in its. movement will act through the conections described to throw the guard' lever 10 to, theposition indicated in dotted ines, Fig,- 2, a mo ement of the lever will act through the connections. described to throw the latch 20 out of engagement with its seat. 01' Shoulder 83., whereupon said latch will drop into the posit ndicated in. dotted lines, Fig. 2, due to the Weighted arm 21; its rcomleotioii h said atch.x Th

lower ng. o h la oh 20 with its. head 20.

aengag meht with t e outer end of! th lever-arm. 39 will; tl'iiroughthe-connection describedrockthe yokeon its, pivots and r ise t e e m '7 nd disengage. the det nts '8' from the ratchet-plate= 9', thus. stopping the Vrotation of the drum. 'In this manor-,1 the guar -arm 14 by thethru f he body of the, opetator. aga uet it. will a itomati lli ater" het tatioa ottii r q; and What l resilltejelj in rery serious these, neiae aster Wihdingbf stonnedi uiit sl haonerator ean e operator is re ldisengage himself from the entangling Wire. The same actuation of parts to stop the drawing drum will occur itin'some manner the operator should et his hand entangled in the Wire on the ot erside of the die and be drawn toward the drum, as it will readily be seen the operatorwould be drawn into contact with the lever 10, which would trip the holding latch 20, or be drawn to such position that he could operate the lever to stop the machine. It is apparent also that the operator can at any time control. the tation of the drum 7, by moving the guardlever -10. by handgwhichi through the connections. described will act to lower the latch and throw the drumoutv ofrotative engagement with the shaft 6. 7

It has been customary heretofore to, operate the clutch mechanism solely by a treadle,

and as, it is more convenient under ordinary circumstances to employ such treadle so that both ands of. the operator will be free, We have illustrated the connection to such treadle by the numeral 45;

When it: is desireclto bring the parts, back o position again for reeling,v the cable 27 is drawn up and the arm 21 i ed oi e -Q .mal position,; which will. act to: bring? all of adrum a power-driven shaft, clutch con-' ne tlous between said she-lit and said drum, it locking device for holdingsaid drum in engagementwith said shaft, a weightcontrolled arm, connections between said looking device and said Weight-controlled arm, a movable guard-arm,;and connections be tween said arm and said locking mechanism whereby by themovementot said guard-arm saidlockinganechanism is released and said weighted arm hooves the-drum out of. engagement. with said" shaft 2. In-a safety device for wire-drawing apparatus, the combinationw-ith a suitable frame, of a drum a' power drivensha t,

clutch. connections between said shaft and said arm, a latch, a keeper engagedaby said latch a weighted arrm.connectionsobetween aid arm and said latch, movable; guard-' arm, and. connections between said guardarmfand saidglatch whereby by the move-- inent l of, said guard-arm said. latch isi le sed from said keepem aadhy the; action of isaidt ei'ghted s id from saidls'hafitt 7 i I drum is. disengaged llnasafetyideiiioe st s-so eembm teeaa h a: su a l 1 frame, of a drum, a power-driven shaft, clutch connections between said drum and said shaft, a latch, a keeper for said latch having an offset on which said latch is supported, a Weighted arm connected to said latch a movable guard-arm, and connections between said latch and said guard-arm whereby when said guard-arm is moved said latch is released from its support and said drum is lifted from engagement with said shaft by the action of said weighted arm.

4. In a safety device for wire-drawing apparatus, the combination with a suitable frame, a drum, a power-driven shaft, clutch connections between said shaft and said drum, a lever-arm for actuating said clutch mechanism, a latch, a projection on said latch overhangin said lever-arm, a weighted arm connecte to said latch, a movable guard-arm, and connections between said latch and said guard-arms whereby by the movement of said guard-arm said latch is released and lowered by the action of said weighted arm to operate said lever-arm to release said drum from said power-shaft.

In testimony whereof we the said GEORGE- O. Rosn, and THOMAS KURTZ, have hereunto set our hands.

GEORGE O. ROSE. THOMAS KURTZ.

'Witnesses:

C. J. MosAN, JOSEPH LANDER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G." 

